16118172 has 72 divisors (see below), whose sum is σ = 46964736. Its totient is φ = 4565664.

The previous prime is 16118153. The next prime is 16118173. The reversal of 16118172 is 27181161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16118173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41893 + ... + 42275.

It is an arithmetic number, because the mean of its divisors is an integer number (652288).

Almost surely, 2^16118172 is an apocalyptic number.

16118172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16118172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23482368).

16118172 is an abundant number, since it is smaller than the sum of its proper divisors (30846564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16118172 is a wasteful number, since it uses less digits than its factorization.

16118172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 562 counting only the distinct ones).

The product of its digits is 672, while the sum is 27.

The square root of 16118172 is about 4014.7443256078. The cubic root of 16118172 is about 252.6030530565.

It can be divided in two parts, 16118 and 172, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 16118172 in words is "sixteen million, one hundred eighteen thousand, one hundred seventy-two".